Yes I understand that you have to pull the whole ship apart but wont that greatly help the nation in a time of war?
No, pulling the whole ship apart would not greatly help the nation in time of war...
FFS, the USN had eight different dino-fueled carriers of classes almost identical to those which later shipped nuclear weapons, with no real deck armor to cut through, with the reactors already designed, and
never in a hundred million fucking years did anyone even semi-seriously suggest converting them to nuclear power.